All Questions
42
questions
0
votes
0
answers
12
views
Question about bpy's matrix_world to torch3d coordinate system conversion
From the visualization results, it appears that the camera pose I converted is not accurate. It has moved backwards. Is there have any suggestions ?QAQ
1.difference of cameras space
2 some discussion
0
votes
1
answer
19
views
Camera pose not updated for render
I created a script to render images with different came poses with Blender 4.0. But I always get the same image, the camera pose is not updated. I tried with the python interpreter, blender script tab,...
- 33
0
votes
0
answers
80
views
Camera rotating around the object in a regular way with python blender
I want a camera that rotates regularly around the object I have taken with the blender package in python, and I want to take the image of the three-dimensional object from certain angles at the time ...
0
votes
1
answer
134
views
How to check if the whole object is in camera view/focus?
I wrote a Python script that parametrized the location and rotation of the camera using a random generator.
...
0
votes
0
answers
209
views
How to set the camera distortion by script?
I have:
A 3D point cloud indoor scene;
camera_poses.npy: records the camera pose changes, e.g. (x,y,z,qx,qy,qz,qw)
camera_info.txt: stores the parameters of the real camera, the contents are as ...
1
vote
1
answer
184
views
How to Efficiently Simulate a Push-Broom Scanner (Line Scanner) in Blender?
Hello Blender Community,
I am working on a project that involves simulating a push-broom scanner in Blender. A push-broom scanner is used primarily in remote sensing applications and captures a linear ...
- 11
0
votes
1
answer
48
views
Acquiring camera position in script in junction with "Lock Interface" during rendering animation
within a Python script resp. a frame change handler I need to get the current camera position and do some calculations with it. I do this as follows:
camera_object = bpy.context.scene.objects["...
- 89
1
vote
2
answers
155
views
Camera not saving image with colors
I'm very new to blender, I have imported a mesh into blender with vertex colors and I can see the colors appear in the blender screen and the camera view, however when i save the image it appears to ...
- 133
2
votes
1
answer
550
views
How could I setup a « video feedback » effect ? (camera filming its own output)
Someone asked me about a great challenge here: is it possible to create a « video feedback » effect in Blender; like this one:
My scene setup:
camera A pointed on a human.
Behind the human, there is ...
- 2,550
6
votes
1
answer
448
views
Finding image coordinates of rendered vertex after refraction, distortion, etc
I'm in blender 2.92 working with the Python API. I know how to get the pixel coordinates of a vertex before refraction, lens distortion, etc.--see e.g. How to find image coordinates of the rendered ...
- 61
1
vote
0
answers
265
views
Implement own camera model in Blender
I need to create real-world cameras with Blender.
My target workflow is:
Use OpenCV to calibrate the camera model
Use the results of OpenCV to create the exact same camera in Blender
Since Blender ...
- 11
2
votes
1
answer
329
views
How to calculate what percentage of the area of an object appears in the render view?
Take the pictures below as an example, I want to calculate how much of the jersey number on the tshirt of the human model is visible on the render view. In the first case the jersey number is totally ...
- 223
1
vote
1
answer
3k
views
How To Change Camera Field Of View From Python Script
I'm trying to change the camera FOV by script. I've already seen different questions like this, but the answers doesn't work for me... This is my code:
...
1
vote
0
answers
608
views
Pinhole Camera?
I would like to know if the default camera generated by blender 2.9 is based on the pinhole model, or if I can apply this model to it? If not, how can I generate a pinhole camera with blender?
I saw a ...
- 11
1
vote
2
answers
466
views
How to find the armatures which are hidden in the camera perspective by other parts?
I am new to blender, I have an object that during the animation some armatures are going to be hidden by other parts, How I could find these hidden armatures?
As you can see in the picture ...
